Photophysical and photochemical study on the tetra 4-isopropylbenzyloxy substituted phthalocyanines

Yalçın, İzzet; Yanık, Hülya; Akçay, Hakkı Türker; Değirmencioğlu, İsmail; Durmuş, Mahmut

doi:10.1016/j.jlumin.2017.07.062

Cited by 20 publications

(7 citation statements)

References 28 publications

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“…Solvent was dried, and crude material purified by column over silica gel using chloroform: acetone (1mL: 0.1 mL v/v). Obtained yield was 28% [13,[23][24][25] To obtain the axial methoxy substituted silicon phthalocyanine, 0.52 g of 4-hydroxy-3-methoxy benzaldehyde was dissolved in about 20 mL of dry tetrahydrofuran (THF). Subsequently, dry MgSO4 (1.52 g; 10 mmol) was added.…”

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

“…Solvent was dried, and crude material purified by column over silica gel using chloroform: acetone (1mL: 0.1 mL v/v). Obtained yield was 28% [13,[23][24][25] After 0.078 g of (3) was suspended in about 15 mL of dry toluene, 0.091 g of dry K 2 CO 3 and 0.1 g of SiPcCl 2 (4) were added. Then, reaction mixture was heated at 70 • C, refluxed under N 2 atmosphere for about 24 h. Thereafter, solvent mixture was cooled to room temperature by complete evaporation.…”

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

“…With chloroform phase dried with MgSO 4 , obtained product (5) was purified by column over silica gel and in solid phase as a precipitate. Obtained yield was about 21% [13,[23][24][25] Samples were drawn at the end of every pre-determined time of exposure, allowed to cool, filtered through a 0.45 µm hydrophobic PTFE membrane filter, and kept for analysis. The substrate degradation was monitored by HPLC using a Merck Hitachi instrument equipped with a L-6200 pump, AS-2000 Autosampler, and UV-Vis L-4200 detector.…”

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

“…The substituted Schiff base (3) was obtained from the condensation of the starting compounds (1 and 2) [23]. The resulting compound (5), the methoxy-substituted SiPc, was synthesized by the reaction between compound (3) and (4) in dry toluene in the presence of K 2 CO 3 [24].…”

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

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Synthesis and Characterization of B/NaF and Silicon Phthalocyanine-Modified TiO2 and an Evaluation of Their Photocatalytic Removal of Carbamazepine

et al. 2020

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This study investigated the synthesis of two different types of photocatalysts, namely, boron/sodium fluoride co-doped titanium dioxide (B/NaF-TiO2), and its analogue, a dye-sensitized form of silicon-based axial methoxy substituted phthalocyanine (B/NaF-TiO2SiPc). Structural and morphological characterizations were performed via X-ray diffraction (XRD); Fourier transform infra-red (FTIR); N2 adsorption–desorption at 77 K by Brunauer–Emmett–Teller (BET) and Barrett, Joyner, and Halenda (BJH) methods; transmission electron microscopy (TEM); X-ray photoelectron spectroscopy (XPS); and UV–visible absorption spectroscopy. The estimated crystallite size of pure TiO2 and pure B/NaF-TiO2 was 24 nm, and that of B/NaF-TiO2SiPc was 29 nm, whereas particle sizes determined by TEM were 25, 28, and 31 nm for pure TiO2, B/NaF-TiO2 and B/NaF-TiO2SiPc respectively. No significant differences between B/NaF-TiO2 and B/NaF-TiO2SiPc were observed for surface area by (BET) analysis (13 m2/g) or total pore volume by the BJH application model (0.05 cm3/g). Energy band gap values obtained for B/NaF-TiO2 and B/NaF-TiO2SiPc were 3.10 and 2.90 eV respectively, lower than pure TiO2 (3.17 eV). The photocatalytic activity of the synthesized materials was tested using carbamazepine (CBZ) as the model substrate. Carbamazepine removal after 4 h of irradiation was almost 100% for B/NaF-TiO2 and 70% for B/NaF-TiO2SiPc; however, the substrate mineralization proceeded slower, suggesting the presence of organic intermediates after the complete disappearance of the pollutant.

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Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

Section: B/naf-tio 2 -Sipc Photocatalystmentioning

confidence: 99%

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Synthesis and Characterization of B/NaF and Silicon Phthalocyanine-Modified TiO2 and an Evaluation of Their Photocatalytic Removal of Carbamazepine

et al. 2020

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“…Fluorescence lifetime (τ F ) is the average time a molecule remains in its excited state before it emits light to return to the ground state . The fluorescence lifetime values of the Pcs ( 4 and 6 ) were detected by using time‐correlated single photon counting (TCSPC) method.…”

Section: Resultsmentioning

confidence: 99%

7‐Oxy‐3,4‐cyclohexenecoumarin Carrying Novel Zinc(II) and Indium(III) Acetate Phthalocyanines: Synthesis, Characterization, Photophysical and Photochemical Properties

et al. 2019

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In this study, 7‐hydroxy‐3,4‐cyclohexenecoumarin (1), two new phthalonitriles, 7‐(2,3‐dicyanophenoxy)‐3,4‐cyclohexene‐coumarin (2), 7‐(3,4‐dicyanophenoxy)‐3,4‐cyclohexenecoumarin (3), were prepared. The phthalonitrile derivatives 2 and 3 were converted to the respective non‐peripheral tetra, peripheral tetra 7‐oxy‐3,4‐cyclohexenecoumarin substituted zinc(II) (4,6) and indium(III)acetate phthalocyanine (5,7) derivatives. All novel purified compounds (2‐7) were characterized by elemental analysis, FT‐IR, UV‐vis, 1H NMR, 13C NMR, MALDI‐TOF mass data. The spectral, photophysical (fluorescence quantum yields and lifetimes), and photochemical (singlet oxygen generation and photodegradation under light irradiation) properties of the synthesized Pcs (4‐7) were studied in DMF, and the results were compared to determine the effects of the locations of substituents and the diversity of the central metal atom on these properties. The 7‐oxy‐3,4‐cyclohexenecoumarin bearing phthalocyaninatozinc(II) and indium(III)acetate complexes showed good solubility in organic solvents such as chloroform, dichloromethane, tetrahydrofuran, acetone, DMF and DMSO. The fluorescence quenching behavior were investigated using 1,4‐benzoquinone as a quencher. They have an acceptable level of singlet oxygen production, which determines the usability of phthalocyanines in photodynamic therapy applications and demonstrated appropriate photodegradation. The thermal properties of Pcs (4‐7) were also investigated.

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Porphyrin and Phthalocyanine as Materials for Glass Coating—Structure and Properties

Popanda

Środa²

2023

Advances in Glass Research

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Photophysical and photochemical study on the tetra 4-isopropylbenzyloxy substituted phthalocyanines

Cited by 20 publications

References 28 publications

Synthesis and Characterization of B/NaF and Silicon Phthalocyanine-Modified TiO2 and an Evaluation of Their Photocatalytic Removal of Carbamazepine

Synthesis and Characterization of B/NaF and Silicon Phthalocyanine-Modified TiO2 and an Evaluation of Their Photocatalytic Removal of Carbamazepine

7‐Oxy‐3,4‐cyclohexenecoumarin Carrying Novel Zinc(II) and Indium(III) Acetate Phthalocyanines: Synthesis, Characterization, Photophysical and Photochemical Properties

Porphyrin and Phthalocyanine as Materials for Glass Coating—Structure and Properties

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